/*
 *  Copyright (c) 2001-2007, Jean Tessier
 *  All rights reserved.
 *  
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  
 *      * Redistributions of source code must retain the above copyright
 *        notice, this list of conditions and the following disclaimer.
 *  
 *      * Redistributions in binary form must reproduce the above copyright
 *        notice, this list of conditions and the following disclaimer in the
 *        documentation and/or other materials provided with the distribution.
 *  
 *      * Neither the name of Jean Tessier nor the names of his contributors
 *        may be used to endorse or promote products derived from this software
 *        without specific prior written permission.
 *  
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR
 *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 *  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.jeantessier.metrics;

import java.io.*;
import java.util.*;

public class CSVPrinter extends Printer {
    private List<MeasurementDescriptor> descriptors;
    
    public CSVPrinter(PrintWriter out, List<MeasurementDescriptor> descriptors) {
        super(out);
        
        this.descriptors = descriptors;

        appendHeader();
    }

    private void appendHeader() {
        appendLongNames();
        appendShortNames();
        appendStatSubNames();
    }
    
    private void appendLongNames() {
        append("\"name\", ");
        
        Iterator<MeasurementDescriptor> i = descriptors.iterator();
        while (i.hasNext()) {
            MeasurementDescriptor descriptor = i.next();

            if (descriptor.isVisible()) {
                if (descriptor.getClassFor().equals(StatisticalMeasurement.class)) {
                    append("\"").append(descriptor.getLongName()).append("\", ");
                    append("\"").append(descriptor.getLongName()).append("\", ");
                    append("\"").append(descriptor.getLongName()).append("\", ");
                    append("\"").append(descriptor.getLongName()).append("\", ");
                    append("\"").append(descriptor.getLongName()).append("\", ");
                    append("\"").append(descriptor.getLongName()).append("\", ");
                    append("\"").append(descriptor.getLongName()).append("\"");
                } else {
                    append("\"").append(descriptor.getLongName()).append("\"");
                }
                
                if (i.hasNext()) {
                    append(", ");
                }
            }
        }
        
        eol();
    }

    private void appendShortNames() {
        append(", ");
        
        Iterator<MeasurementDescriptor> i = descriptors.iterator();
        while (i.hasNext()) {
            MeasurementDescriptor descriptor = i.next();

            if (descriptor.isVisible()) {
                if (descriptor.getClassFor().equals(StatisticalMeasurement.class)) {
                    append("\"").append(descriptor.getShortName()).append("\", ");
                    append("\"").append(descriptor.getShortName()).append("\", ");
                    append("\"").append(descriptor.getShortName()).append("\", ");
                    append("\"").append(descriptor.getShortName()).append("\", ");
                    append("\"").append(descriptor.getShortName()).append("\", ");
                    append("\"").append(descriptor.getShortName()).append("\", ");
                    append("\"").append(descriptor.getShortName()).append("\"");
                } else {
                    append("\"").append(descriptor.getShortName()).append("\"");
                }
                
                if (i.hasNext()) {
                    append(", ");
                }
            }
        }
        
        eol();
    }

    private void appendStatSubNames() {
        append(", ");
        
        Iterator<MeasurementDescriptor> i = descriptors.iterator();
        while (i.hasNext()) {
            MeasurementDescriptor descriptor = i.next();

            if (descriptor.isVisible()) {
                if (descriptor.getClassFor().equals(StatisticalMeasurement.class)) {
                    append("minimum, ");
                    append("median, ");
                    append("average, ");
                    append("std dev, ");
                    append("maxium, ");
                    append("sum, ");
                    append("nb");
                }
                
                if (i.hasNext()) {
                    append(", ");
                }
            }
        }
        
        eol();
    }
            
    public void visitMetrics(Metrics metrics) {
        if (isShowEmptyMetrics() || isShowHiddenMeasurements() || !metrics.isEmpty()) {
            append("\"").append(metrics.getName()).append("\", ");
            
            Iterator<MeasurementDescriptor> i = descriptors.iterator();
            while (i.hasNext()) {
                MeasurementDescriptor descriptor = i.next();
                
                if (isShowHiddenMeasurements() || descriptor.isVisible()) {
                    Measurement measurement = metrics.getMeasurement(descriptor.getShortName());
                    
                    measurement.accept(this);
                    
                    if (i.hasNext()) {
                        append(", ");
                    }
                }
            }
            
            eol();
        }
    }

    public void visitStatisticalMeasurement(StatisticalMeasurement measurement) {
        append(measurement.getMinimum()).append(", ");
        append(measurement.getMedian()).append(", ");
        append(measurement.getAverage()).append(", ");
        append(measurement.getStandardDeviation()).append(", ");
        append(measurement.getMaximum()).append(", ");
        append(measurement.getSum()).append(", ");
        append(measurement.getNbDataPoints());
    }
    
    protected void visitMeasurement(Measurement measurement) {
        append(measurement.getValue());
    }
}
